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by Terry, Chris L., author
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295 pages ; 16 cm
Topics: African American teenage boys -- Juvenile fiction, Teenagers -- Juvenile fiction, Dysfunctional...
NASA Network Resource and Training Site
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This contribution presents selected results from simultaneous L- and S-Band slant-path fade measurements through a pecan, a cottonwood, and a pine tree employing a tower-mounted transmitter and dual-frequency receiver. A single, circularly-polarized antenna was used at each end of the link. The objective was to provide information for personal communications satellite design on the correlation of tree shadowing between frequencies near 1620 and 2500 MHz. Fades were measured along 10 m lateral...
Topics: NASA Technical Reports Server (NTRS), RADIO COMMUNICATION, RADIO TRANSMISSION, SATELLITE...
Arxiv.org
by Atsushi Nakamula; Nobuyuki Sawado; Koki Takesue
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Calorons are finite action solutions to the anti-selfdual Yang-Mills equations on $\mathbb{R}^3\times S^1$. They are generally constructed by the so called Nahm construction. We perform the numerical Nahm transform for the Nahm data of 3-calorons with $C_3$-symmetry, which do not have the monopole limits. Dissimilar to the cases of having monopole limits, we can trace the zero-circumference limit of $S^1$.It is found that the action density of the calorons tends to fade away as $S^1$ shrinks.
Topic: High Energy Physics - Theory
Source: http://arxiv.org/abs/1406.5650
Arxiv.org
by M. Kostur; J. Luczka; P. Hanggi
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Anomalous transport of non-Markovian, thermal Brownian particle dynamics in spatially-periodic symmetric systems that is driven by time-periodic symmetric driving and constant bias is investigated numerically. The Brownian dynamics is modeled by a Generalized Langevin equation with exponentially correlated Gaussian thermal noise, obeying the fluctuation-dissipation theorem. We study the role of non-zero correlation time of thermal fluctuations for the occurrence of absolute negative (linear)...
Source: http://arxiv.org/abs/0909.1914v1
Books to Borrow
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xix, 284 pages, 16 unnumbered pages of plates : 24 cm
Topics: Serling, Rod, 1924-1975, Twilight zone (Television program : 1959-1964), Authors, American -- 20th...
Arxiv.org
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The "spin ice" state found in the rare earth pyrochlore magnets Ho2Ti2O7 and Dy2Ti2O7 offers a beautiful realisation of classical magnetostatics, complete with magnetic monopole excitations. It has been suggested that in "quantum spin ice" materials, quantum-mechanical tunnelling between different ice configurations could convert the magnetostatics of spin ice into a quantum spin liquid which realises a fully dynamical, lattice-analogue of quantum electromagnetism. Here we...
Source: http://arxiv.org/abs/1204.1325v2
Arxiv.org
by B. A. Kniehl; G. Kramer; I. Schienbein; H. Spiesberger
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We calculate the transverse-momentum (p_T) distribution for the inclusive hadroproduction of B mesons at intermediate values of p_T at next-to-leading order (NLO) in a dedicated finite-mass scheme using realistic non-perturbative fragmentation functions that are obtained through a global fit to e^+e^- data from CERN LEP1 and SLAC SLC exploiting their universality and scaling violations. We find that finite-mass effects moderately enhance the cross section, by about 20% at p_T = 2 m_b, and...
Source: http://arxiv.org/abs/0705.4392v2
The transmitted signal consists of K pulses separated in time, frequency space so as to be nonoverlapping. In passing through the medium to the receiver, each signal pulse is subjected to fading. In particular, pulse pairs which are closely spaced in time, frequency space can fade in a highly dependent fashion, while those more widely separated can have relatively independent fading behavior; that is, the transmitted frequency-shift-keyed signal pulses undergo partially-correlated fading of a...
Topics: DTIC Archive, Nuttall, Albert H, NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV NEW LONDON CT NEW LONDON...
Arxiv.org
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On a warped five-dimensional Friedmann-Lema\^{\i}tre-Robertson-Walker(FLRW) spacetime, dark energy can be induced by a U(1) scalar-gauge field on the brane. We consider a zero effective cosmological constant, i.e., the Randall-Sundrum(RS) fine-tuning and no bulk matter fields. The standard model fields interact via the bulk Weyl tensor and cause brane fluctuations. Due to the warp factor, disturbances don't fade away during the expansion of the universe. The late-time behavior could be...
Topic: General Relativity and Quantum Cosmology
Source: http://arxiv.org/abs/1407.7505
Books to Borrow
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xii, 574 p. ; 23 cm
Topics: Feature stories -- United States, Pulitzer prizes, Reporters and reporting -- United States
Arxiv.org
by Amir Aminjavaheri; Arman Farhang; Ahmad RezazadehReyhani; Linda E. Doyle; Behrouz Farhang-Boroujeny
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We study the possibility of removing the cyclic prefix (CP) overhead from orthogonal frequency division multiplexing (OFDM) in massive multiple-input multiple-output (MIMO) systems. We consider the uplink transmission while our results are applicable to the downlink as well. The absence of CP increases the spectral efficiency in expense of intersymbol interference (ISI) and intercarrier interference (ICI). It is known that in massive MIMO, the effects of uncorrelated noise and multiuser...
Topics: Information Theory, Computing Research Repository, Mathematics
Source: http://arxiv.org/abs/1608.05997
Arxiv.org
by Arman Farhang; Amir Aminjavaheri; Ahmad RezazadehReyhani; Linda E. Doyle; Behrouz Farhang-Boroujeny
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This paper studies the possibility of eliminating the redundant cyclic prefix (CP) of orthogonal frequency division multiplexing (OFDM) in massive multiple-input multiple-output systems. The absence of CP increases the bandwidth efficiency in expense of intersymbol interference (ISI) and intercarrier interference (ICI). It is known that in massive MIMO, different types of interference fade away as the number of base station (BS) antennas tends to infinity. In this paper, we investigate if the...
Topics: Information Theory, Computing Research Repository, Mathematics
Source: http://arxiv.org/abs/1607.05653
We studied relationships among background characteristics, behavioral infractions, punishments, attendance, and educational achievement, using longitudinal data of students in grades 1-6 and 8-12. We estimated how much hypothesized early improvements in educational achievement or sustained improvements in behavior and attendance might ultimately increase educational achievement in grades 6 and 12. We also calculated similar estimates for increasing the rate of promotion from grade 1 to grade 2....
Topics: ERIC Archive, Elementary Secondary Education, Educational Improvement, Student Behavior, Academic...
Arxiv.org
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We would like to find a way to improve the determination of galaxy star formation history from integrated light spectroscopy. To this end, several classes of chemically peculiar (CP) stars arise during the course of normal evolution in single stars and noninteracting binary stars. An aging stellar population has periods of time in which CP stars contribute to the integrated light, and others in which the contributions fade. The HgMn stars, for example, occupy a narrow temperature range of 10500...
Topics: Solar and Stellar Astrophysics, Astrophysics, Astrophysics of Galaxies
Source: http://arxiv.org/abs/1507.05076
Arxiv.org
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It is a mystery why the density of matter and the density of vacuum energy are nearly equal today when they scale so differently during the expansion of the Universe. We suggest a paradigm that might allow for a non-anthropic solution to this cosmic coincidence problem. The fact that the half life of Uranium 238 is very near to the age of the solar system is not considered a coincidence since there are many nuclides with half lives ranging over a huge range of time scales implying that there is...
Source: http://arxiv.org/abs/astro-ph/0202052v2
Books to Borrow
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1 volume (unpaged) : 25 cm
Topic: Photography -- Technique
Books to Borrow
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1 volume (unpaged) : 25 cm
Topic: Photography -- Technique
The Manual Library
by Elegant Themes
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Divi 3.22.2
Topics: divi, elegantthemes
Community Texts
by andreas buechel mayloveheal androgyneas
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this is the fiveteenth text of https://archive.org/details/thefifthascendestoryline while the fourteenth is at https://archive.org/details/mmatalksbacktroughtimeandspace --- black is beautifull andreas wakes up this morning and feels awfully bad having made this kind of stupid analogies of white clouds compared to black coal of burnt trees… having said white clouds from heaven and black burnt trees from hell.. he does not even believe in this heaven and hell concept, never did really … the...
Topics: ascende, fifth storyline
Community Texts
by Andrew G. Berg and Jonathan D. Ostry
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is there a trade-off between the two or do they go hand in hand? IN his influential 1975 book Equality and Efficiency: The Big Tradeoff , Arthur Okun argued that pursuing equality can reduce efficiency (the total output produced with given resources). The late Yale University and Brookings Institution economist said that not only can more equal distribution of incomes reduce incentives to work and invest, but the efforts to redistribute—through such mechanisms as the tax code and minimum...
Topics: equality, efficiency, decentralisation, distributed, countries, economy, imf
Ourmedia
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A collection of essays by Gary Clifford Gibson on recent political and social events (circa 2003-2004).